Creating Events via GMEdit results in a build fail in 2024.8

[Ryemanni]

Hello, in gm version 2024.8 if you create new events via GMEdit and not through the IDE, the new events result in a failed build accompanied by the "Cannot load this new project because it, or its linked prefab libraries, need upgrading."

I managed to track down the problem to the .yy file of the object. In the "eventList" array, if an event is created through the IDE it shows:
{"$GMEvent":"v1","%Name":"","collisionObjectId":null,"eventNum":0,"eventType":3,"isDnD":false,"name":"","resourceType":"GMEvent","resourceVersion":"2.0",}
and via GMEDIT:
{"$GMEvent":"","%Name":"","collisionObjectId":null,"eventNum":0,"eventType":3,"isDnD":false,"name":"","resourceType":"GMEvent","resourceVersion":"2.0",}

As you can see, the "v1" is missing in the event created with GMEdit. If I manually add in the "v1" the project builds normally.

This happens consistently in gm 2024.8 with runtime v2024.8.0216, but I can't say for earlier versions as I skipped them and went straight from 2023.11 to 2024.8.
Thank you!

[cauehenrique]

Same here, was searching if someone found a workaround for this issue...
GameMaker simply wipes out events we create using GMEdit.

[YellowAfterlife]

You can try building the latest git version from source code, but more generally 2024.6 and onward became extremely strict towards the YY format - even incorrect field order (as seen here) is now considered a grave mistake and will result in build failure.

I do not know what result these changes pursue.